Math · Topic 71 of 124
Measuring Angles with a Protractor
⭐ MasteredA protractor is a half-circle tool with degree marks from 0 to 180. Line up the centre with the vertex of the angle and read the number where the arm crosses the scale.
💡 Fun fact
A full turn is 360 degrees, and a protractor shows exactly half of that.
All about Measuring Angles with a Protractor
An angle is formed where two lines meet. A protractor is a half-circle tool with degree marks from 0 to 180.
Read the number where the other line crosses the scale. Remember that a straight line is 180 degrees and a right angle is 90 degrees. Estimating first helps you spot when you have read the wrong scale.
🎮 Try it yourself!
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